Document can't be opened | Anchors, Hyperlinks, Dictionary

[PC100-Fan]

1. Are you using the latest release version? Yes
2. Can you reproduce it? Yes
3. Does it happen for a new document? No
   If not do you have a document you can share that shows the problem? Yes
4. If you cannot provide a sample document then please give an accurate description of the problem for example it should include most of the following:

•    What is your operating system and version? macOS BigSur Version 11.2.3
•    What happened for you (and what you expected to happen)
     Anker setzen, Hyperlinks setzen, Inhaltsverzeichnis setzen —> "Document must be closed"
     Document does not open any more
•    Provide a recipe for creating the problem (step-by-step what you did).
     Place two anchors, place them on different Heading 2 paragraphs but also they are different, they have the same text. Rename the anchors in the anchors panel. Prepare hyperlinks to the anchors.  Prepare a dictionary (Inhaltsverzeichnis) with only heading 2 paragraphs. Change the visibility of the anchors as PDF bookmark (Lesezeichen). Play around. May be the document is now corrupted.
•    Screenshots (very handy) or a screen capture/video. Sorry document does not open any more.
•    Any unusual hardware (like tablets or external monitors or drives that may affect things) or relevant other applications like font managers or display managers. MacBook Pro Late 2016, additional two Monitors, Saving on any Synology NAS via AFP.
•    Did this same thing used to work and if so have you changed anything recently? (software or hardware)
  The same thing does not work in an other document. Affinity Version 1.9

Thank you for your help.

Anleitung_Jitsi_Meet_-_neues_Layout.afpub

[Pauls]

I've logged an issue regarding the file not able to be opened

[PC100-Fan]

Thank you. I hope you can make it openable again.